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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Identification

Chemical structure
Display Name:
Magnesium hydroxide
EC Number:
215-170-3
EC Name:
Magnesium hydroxide
CAS Number:
1309-42-8
Molecular formula:
H2MgO2
IUPAC Name:
magnesium dihydroxide

Type of Substance

Composition:
mono-constituent substance
Origin:
inorganic

Substance Identifiers open all close all

  • 200-06H
  • Akdolit
  • Akdolit Hydrolit Mg G
  • CellGuard MH
  • CellGuard MH UF
  • CellGuard OP
  • Dolomag
  • Duhor
  • FloMag PWT MHP
  • FloMag H
  • FloMag HUS
  • FloMag MHP
  • Hidramag
  • Hidromag
  • Inertimag
  • Kisuma 10
  • Kisuma 5
  • Kisuma 5AC
  • Kisuma 5BC
  • Kisuma 5C
  • Kisuma 5Q
  • MDH
  • MagChem MH 10 UF
  • MagChem MH 10
  • MagChem MH 10 LC
  • MagChem MH 10 ULC
  • MagChem MH 10 ULC UF
  • MagChem MHP IND
  • MagShield S
  • MagShield S NB 10
  • MagShield S NB15
  • MagShield UF
  • MagShield UF NB 10
  • MagShield UF NB 10 CL
  • Magal H
  • Magnesium Hydroxide
  • Magnesium hydroxide
  • Magnifin
  • ManMag HP MH
  • Marinco H2
  • Martinit
  • Oxyfertil
  • Papermag
  • Premier ECOMAG Magnesium Hydroxide suspension
  • Purmag
  • R-1557
  • Sorbacal
  • TIS# I0038
  • UtiliMag H
  • UtiliMag Hus
  • Versamag
  • Versamag 30
  • Visucal
  • Y99R8
  • Compositions

    Boundary Composition(s) open all close all

    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide

    Legal Entity Composition(s) open all close all

    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide
    State Form:
    other: the product is sold as stable suspension of Mg(OH)2 and water, and can be sold as dry product/undried product.


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide

    Characterisation of nanoforms

    Particle size distribution and range

    Particle size distribution and range
    Range of length:
    > 1 μm
    Range of lateral dimension 1:
    > 1 μm
    Range of lateral dimension 2:
    < 100 nm

    Specific surface area

    Range of specific surface area:
    6 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide
    State Form:
    other: viscous sample


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide
    State Form:
    other: powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Magnesium hydroxide
    EC Number:
    215-170-3
    EC Name:
    Magnesium hydroxide
    CAS Number:
    1309-42-8
    Molecular formula:
    H2MgO2
    IUPAC Name:
    magnesium dihydroxide
    State Form:
    solid: bulk


    Constituent 1